x=int(input())
if(x>=400 and x<=599):
  print("8")
if(x>=600 and x<=799):
  print("7")
if(x>=800 and x<=999):
  print("6")
if(x>=1000 and x<=1199):
  print("5")
if(x>=1200 and x<=1399):
  print("4")
if(x>=1400 and x<=1599):
  print("3")
if(x>=1600 and x<=1799):
  print("2")
if(x>=1800 and x<=1999):
  print("1") x=int(input()) x int(input()) int input() input if(x>=400 and x<=599):
  print("8") x>=400 and x<=599 x>=400 x 400 x<=599 x 599 print("8") print "8" if(x>=600 and x<=799):
  print("7") x>=600 and x<=799 x>=600 x 600 x<=799 x 799 print("7") print "7" if(x>=800 and x<=999):
  print("6") x>=800 and x<=999 x>=800 x 800 x<=999 x 999 print("6") print "6" if(x>=1000 and x<=1199):
  print("5") x>=1000 and x<=1199 x>=1000 x 1000 x<=1199 x 1199 print("5") print "5" if(x>=1200 and x<=1399):
  print("4") x>=1200 and x<=1399 x>=1200 x 1200 x<=1399 x 1399 print("4") print "4" if(x>=1400 and x<=1599):
  print("3") x>=1400 and x<=1599 x>=1400 x 1400 x<=1599 x 1599 print("3") print "3" if(x>=1600 and x<=1799):
  print("2") x>=1600 and x<=1799 x>=1600 x 1600 x<=1799 x 1799 print("2") print "2" if(x>=1800 and x<=1999):
  print("1") x>=1800 and x<=1999 x>=1800 x 1800 x<=1999 x 1999 print("1") print "1" x=int(input()) int(input()) x
x=int(input())
if(x>=400 and x<=599):
  print("8")
if(x>=600 and x<=799):
  print("7")
if(x>=800 and x<=999):
  print("6")
if(x>=1000 and x<=1199):
  print("5")
if(x>=1200 and x<=1399):
  print("4")
if(x>=1400 and x<=1599):
  print("3")
if(x>=1600 and x<=1799):
  print("2")
if(x>=1800 and x<=1999):
  print("1")
